package com.cy.pj.goods.service;

import com.cy.pj.goods.dao.GoodsDao;
import com.cy.pj.goods.pojo.Goods;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;
/*
* 此对象负责商品模块的业务逻辑处理
* 1）通过数据层对象访问业务数据
* 2）通过日志对象记录日志
* 3）通过第三方框架进行权限控制
* 4）还可以做cache
* */
@Service
public class GoodsServiceImpl implements GoodsService{

    private static final Logger log= LoggerFactory.getLogger(GoodsServiceImpl.class);

    @Autowired
    private GoodsDao goodsDao;


    @Override
    public List<Goods> findGoods() {
        long t1=System.currentTimeMillis();
        log.info("Start {}", t1);
        List<Goods> list=goodsDao.findGoods();
        long t2=System.currentTimeMillis();
        log.info("end {}", t2);
        log.info("execute time {}", t2-t1);
        return list;
    }

    @Override
    public int deleteById(Integer id) {
        if(id==null||id<1)
            throw new IllegalArgumentException("传入的id值不合法");
        int rows=goodsDao.deleteById(id);
        long t1=System.currentTimeMillis();
        log.info("Start {}", t1);
        List<Goods> list=goodsDao.findGoods();
        long t2=System.currentTimeMillis();
        log.info("end {}", t2);
        log.info("execute time {}", t2-t1);
        return rows;
    }


}
